Simulation, fabrication, and measurement of a plasmonic-enhanced terahertz photoconductive antenna

Nathan Burford; Magda El-Shenawee

doi:10.1117/12.2217852

25 February 2016 Simulation, fabrication, and measurement of a plasmonic-enhanced terahertz photoconductive antenna

Nathan Burford, Magda El-Shenawee

Proceedings Volume 9747, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX; 974704 (2016) https://doi.org/10.1117/12.2217852
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

In this work a new plasmonic thin-film based terahertz photoconductive antenna is proposed. The computational method utilized to design the antenna is outlined, as well as the steps and preliminary results for the fabrication and characterization of the device. The model predicted over two orders of magnitude increase in the peak photocurrent as compared to a conventional device design, while slightly reducing the width of the induced current pulse. This indicates that the proposed design will be effective as a high efficiency terahertz emitter. In addition to the computational modeling, preliminary results demonstrating the proposed fabrication processes and experimental characterization are presented. It is demonstrated that when using a pyroelectric detector to quantify the output terahertz power it is important to first quantify the power of the IR photons generated by thermal relaxation in the device.

Citation Download Citation

Nathan Burford and Magda El-Shenawee "Simulation, fabrication, and measurement of a plasmonic-enhanced terahertz photoconductive antenna", Proc. SPIE 9747, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications IX, 974704 (25 February 2016); https://doi.org/10.1117/12.2217852

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